<html>
<head>
    <meta charset="utf-8">
    <title>表单页面</title>
</head>
<body>
<form method="post" action="ServletDemo2">
    <input type="text" name="firstName" placeholder="请输入firstName">
    <input type="text" name="secondName" placeholder="请输入secondName">
    <input type="submit" value="提交数据">
</form>
</body>
</html>